US 7004553 B2
In a cabinet having vertically extending side members (5) forming part of a chassis of the cabinet, panel mounts (1), also to extend vertically in the cabinet and to have panels mounted thereupon, are mountable to the side members (5) by integral members (3) which extend parallel to the outer face of the panel mount (1) at a spacing from the outer face and in a direction perpendicular to the longitudinal extent of the panel mount (1), i.e., horizontally. The integral members (3) are engaged in respective apertures in the side members (5) or in braces (7) extending between the side members (5) followed by forward or rearward movement to effect securement, retaining means such as pins or studs then being inserted in aligned bores (8, 9) in the panel mounts (1) and side members (5) to prevent return movement.
1. A method of hanging a vertical side panel of an electrical cabinet, comprising the steps of: engaging a top flange of the side panel, wherein the top flange has a horizontal portion, over an upper suspension member of a frame of the cabinet, and engaging a horizontal lower flange of the side panel with an upturned hook portion at the lower end of the frame of the cabinet such that the upturned hook projects upwardly through an aperture in the lower flange, wherein the aperture in the lower flange is aligned with a cutout in a free edge of the lower flange and engagement is effected by engaging the hook in the cutout and then slightly raising the side panel while pushing the same inwardly towards the cabinet before lowering the side panel downwardly onto the hook.
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This application is a divisional of U.S. patent application Ser. No. 09/869,618 filed on Mar. 25, 2002, which is hereby incorporated by reference.
The invention relates to electrical cabinets.
Electrical cabinets are used for receiving electronic and electrical components particularly but not exclusively for the operation of local data networks. The components such as sub-racks with electronic and electrical components, fans and other accessories are mounted within the cabinet on internal frames and the cabinets generally have side panels, a door and end panels and are mounted on a frame which preferably comprises upper and lower end members and vertically extending side members preferably provided one towards the front and the other towards the rear at each lateral side of the cabinet.
According to one aspect of the invention, panel mounts, comprising members to extend vertically within the cabinet and having attachment means whereby panels can be mounted thereupon, are mounted to the side members of the cabinet by integral members which extend substantially parallel to the outer face of the panel mount at a spacing from the outer face and in a direction perpendicular to the longitudinal extent of the panel mount, such integral members each being engaged in a respective aperture in the side members or braces extending between the side members at one lateral side of the cabinet, followed by movement forwardly or rearwardly to secure the panel mount to the side members, retaining means such as a pin or stud then being inserted in aligned bores in the panel mounts and side members or braces to prevent return movement in said forward or rearward directions.
Such method of securement can have the advantage over previously proposed methods which involved vertical movement of the panel mounts to secure them, that panel mounts of the full height of the side members can be secured to the side members where previously, due to the vertical movement experienced during the engagement, it was necessary for the panel mount to be significantly shorter than the side member. The panel mounts, which generally define a 483 mm (19 inch) wide mounting, can thus be secured at various locations in the depth of the cabinet and can extend for the full height of the side members.
Preferably the apertures in the side members or braces are spaced at 25 mm horizontal spacing to set the locations at which the panel mounts can be secured at 25 mm spacings.
Advantageously the braces have horizontally elongate slots therein in addition to the apertures whereby the braces can be secured by fastenings means, such as bolts, extending through the slots whereby the braces are horizontally movable with respect to the side members to permit the panel mounts to be secured at any desired location in the depth of the cabinet.
According to another aspect of the invention in an electrical cabinet chassis supports, for example for supporting shelves, are provided in the form of cantilevers by providing the chassis supports with vertically spaced securing hooks which together are capable of preventing pivoting movement of a mounted article such as a shelf.
The vertically spaced hooks may project longitudinally of a wall of the chassis support and parallel thereto to be engaged in respective apertures in a member from which they are to be supported.
According to a further aspect of the invention, means to secure in abutment two rectangular section tubular metal members with their longitudinally axes mutually at right angles comprises punching or drilling at least two first holes in one wall of each of the metal members, acting through the first holes so formed to burst a respective second hole to each first hole in the opposite wall of the metal members to form an outwardly extending collar, screw threading the second holes in one of the members, engaging the collars of the other of the members in the first holes of said one of the members and engaging a bolt through the aligned first and second holes of said one and said other members to engage the screw thread in the collar of said one of the members to clamp the members together.
According to a still further aspect of the invention, in an electrical cabinet a method of hanging a vertical side panel comprising engaging a top flange of the side panel, which top flange has a horizontal portion and a vertical return, over an upper suspension member of a frame of the cabinet and engaging a horizontal lower flange of the side panel with an upturned hook portion at the lower end of the frame of the cabinet so that the upturned hook projects upwardly through an aperture in the horizontal lower flange.
Preferably the aperture in the horizontal lower flange is aligned with a cutout in a free edge of the flange and engagement is effected by engaging the hook in the cutout and then slightly raising the side panel while pushing it inwardly towards the cabinet before lowering the side panel downwardly onto the hook.
The upper suspension member of the frame may be provided at the upper end of vertical side members of the frame or may be provided on extension pieces which are supported by the vertical side members and project laterally outwardly to extend the width of the cabinet beyond the side members. By using such extension pieces extra wiring accommodating spaces can be provided at one or both of the sides of a cabinet.
The extension pieces can have hooks to engage over the upper edge of the side members, preferably in a recess so that such upper edges are below the upper extremity of the side members, and be bolted to the side members to retain them in position. Preferably each extension piece can be used as either an upper or a lower extension piece.
The invention is diagrammatically illustrated by way of example in the accompanying drawings, in which:
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